.f_45ModalBox{
    padding:10px;
    position: absolute;
    height:315px;
    overflow: hidden;
    width: 100%;
    background-color: white;
    z-index: 1156;
    border: 1px solid #dcdee2;
    border-radius: 4px;
    box-shadow: 0 1px 5px rgba(0,0,0,0.1);
    /*执行动画*/
    -webkit-animation: upDown 0.3s cubic-bezier(.15, .73, .37, 1.2);
    animation: upDown 0.3s cubic-bezier(.15, .73, .37, 1.2);
    button{
        width: 20%;
        text-align: left;
    }
}
.f_45MoBg{
  z-index: 1155;
  position: fixed;
  background-color:transparent;
  top:0;
  bottom:0;
  left:0;
  right:0;
  margin:auto;
}